Remanence of the PC computing past: Intel MCS-86 Assembly Language Reference Guide on bitsavers.org in http://bitsavers.org/pdf/intel/8086.
Intel MCS-86 is/was the 16-bit range of x86 processors.
I used it in BASM (not only in Delphi 1 and up, it started in Turbo Pascal 6), and before that in MASM, NASM, and TASM.
–jeroen





